-Meriwether Lewis was an explorer, soldier, botanical collector, and American public administrator. Lewis is known for having led, with William Clark, the expedition of Lewis and Clark, whose mission was to explore, shortly after the Louisiana Purchase, the new acquired territories and that managed to establish trade and sovereignty over the natives, and claim the Pacific Northwest and Oregon territory for the United States before the European nations do.
-William Clark was a military officer, territorial governor, and American explorer who joined Meriwether Lewis on the so-called Lewis and Clark expedition.
In 1803, Lewis proposed to Clark to share the command of the expedition he was forming under the auspices of President Thomas Jefferson, the so-called Corps of Discovery. The expedition lasted three years, and although technically it was a subordinate and was under the command of Lewis, in practice both shared the command at the insistence of this.
Clark was mainly concerned with the preparation of letters, the management of logistics and supplies, and the identification and classification of indigenous plants and animals.
-Sacajawea was an indigenous woman belonging to the Shoshone tribe who accompanied and guided the Lewis and Clark Expedition in their exploration of the western part of the United States of America. Sacajawea traveled with the expedition between 1804 and 1806, from North Dakota to the coast of the current state of Oregon.
Sacajawea was of great help indicating the steps to follow to reach the Pacific Ocean, forming part of one of the most important trips of recognition of the territory of North America.
-York was an African-American slave known for his participation in the Lewis and Clark Expedition. A slave of William Clark, he participated without pay despite being a full member of the group. There's no data of him after the expedition.
